"It could be no problem, it could be serious."
That's Airport Authority Chairman Joe Tannehill's assessment of the potential issue involving the backbone of the underground drainage system laid out over a substantial part of the airport property.
Contractors buried the maze of large pipes, then surrounded it with rock. But, instead of using hard, durable rock, workers apparently used a softer rock, which could deteriorate over time.
"It could be something that will require us to take a lot of rock, 80,000 cubic yards of rock out and put harder rock in," commented Tannehill.
Before they begin digging up asphalt, grass and concrete, board members want to test the rock to answer some key questions.
"The question is, the rock that is put in there, after testing, how long is it going to last? Is it going to be 50 years, 100 years, is it going to be 5 years?" asked Tannehill.
"That will be an issue for the engineers to address. I don't think it's quite that severe of an issue at this point in time," said Airport Authority executive director Randy Curtis.
The other issue is who's responsible for the error. Board members say they don't know who's at fault, or why they are only hearing about it now.
"The one consistent fact that's out there is it's either the engineers or the contractor. That will play out as we go into mediation, further discussions," Curtis said.
Despite the concerns, board members say it won't delay the airport's May 23 opening. But, it could delay other projects.
Because of the potential costs of replacing that soft rock, Tannehill now wants to put discussions of a cross-wind runway on hold.
"I'd like to say I deferred it," said Tannehill. "I'll probably be pushing the cross-wind runway after I go off the board."
Tannehill and Vice Chairman Bill Cramer's terms end in June.
Board members will hold a special meeting next week to further discuss the issues, including sand problems in the stormwater drainage system.
On a related note, contractors say they have finally managed to grow grass on the airport site -- about knee-high in some places. They say they went out of the design specs to find a solution.